//Event模块
const MyEmitter=require("events");

const myEmitter=new MyEmitter();

//事件绑定监听器处理
myEmitter.on("event_name",function (a,b){
    console.log(a,b,this,this===myEmitter);
});
//事件发射器
myEmitter.emit("event_name","a","b");
//箭头函数的影响
const myEmitter2=new MyEmitter();
myEmitter2.on("event_name",(a,b)=>{
    console.log(a,b,this);
});
myEmitter2.emit("event_name","a","b");